Check version format before publishing

.github/workflows/publish.yaml

@@ -20,10 +20,15 @@ jobs:
       - name: Publish and tag
         run: |
           echo "Current git commit is $(git rev-list -n 1 HEAD)."
+
           VERSION="$(yq '.package.version' Cargo.toml)"
           echo "Project version from Cargo.toml is $VERSION"
-          VERSION_TAG="v$VERSION"
+          if ! (echo "$VERSION" | grep --quiet "^[0-9]\{1,2\}\.[0-9]\{1,3\}\(\.[0-9]\{1,3\}\)\?$"); then
+            echo "The version format does not look like a release version, not publishing the crate."
+            exit 1
+          fi
 
+          VERSION_TAG="v$VERSION"
           if git tag | grep --quiet "^$VERSION_TAG$"; then
             echo "Tag $VERSION_TAG already exists at $(git rev-list -n 1 $VERSION_TAG), not publishing the crate."
             exit 1

CONTRIBUTING.md

@@ -154,11 +154,11 @@ For example spelling/grammar or fixing up a PR by someone else.
 ## Release Procedure
 
 The project is built automatically by a GitHub action when a new revision is pushed to the master branch.
-The crate is published by triggering `.github/workflows/manual.yml` GitHub action.
-After the crate is successfully published a new git tag is created in the repository.
+The crate is published by triggering `.github/workflows/publish.yml` GitHub action.
+After the crate is successfully published a new version's git tag is created in the repository.
 
 So to publish a new version
 1. Update `project.version` field in `Cargo.toml`.
 2. Push the changes to the `master` branch.
 3. Wait until GitHub build job completes successfully.
-4. [On the Actions page](https://github.com/RustAudio/rodio/actions) start `.github/workflows/manual.yml`.
+4. [On the Actions page](https://github.com/RustAudio/rodio/actions) start `.github/workflows/publish.yml`.